Big Mike has cancer, and I have to step in and do what science hasn't yet done. I've got to find a cure. That's right--I'm 13 years old, and I'm about to change the world. From the Publisher: The follow-up to D.K. Brantley's I'm 12 Years Old And I Saved The World, this book tackles the difficult topics of childhood cancer, dealing with death, and battling addiction. I'm 13 Years Old And I Changed The World is an open admission that bad things happen to good people. And while you often can't fix the bad situation, you can make it better if you're willing to be a friend. We hope this book comforts those who are dealing with childhood cancer, death, or addiction and increases empathy for all. FREE Bonus Gift: Look inside to learn how to get a free mp3 of "Grandpa," a song that ties into the book!